What would the cost increment be to allow some level of extensibility?

[realrichardsharpe@gmail.com]

One of the advantages of the LibRem 5 is that it has two M.2 slots, so the phone hardware and the WiFi hardware can be upgraded, or one can possibly swap the WiFi card with an M.2 NVMe card or other interesting cards, like WiFi 6.

What would the cost increment be for the PinePhone to include an M.2 slot?